Imparfinis mishky (Siluriformes, Heptapteridae) a new species from the ríos Paraná and Uruguay basins in Argentina

Almirón, Adriana Edith; Casciotta, Jorge Rafael; Bechara, José A.; Díaz, Francisca; Bruno, Carlos Eduardo Malavasi; D'ambrosio, S; Solimano, Patricio José; Soneira, Paula

doi:10.5962/bhl.part.80416

Cited by 4 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Identification of the material was made by examination of specimens and comparison with photos and X‐rays, including types, original descriptions of valid species of Imparfinis and revisionary articles about them: Pearson (1924), Fowler (1940), Mees and Cala (1989), Bockmann (1998), Almirón et al . (2007) and Castro and Wosiacki (2019).…”

Section: Methodsmentioning

confidence: 95%

“…Almirón et al . (2007), after examination of Castello's specimen, could not assign it to I. cochabambae , nor any other species.…”

Section: Introductionmentioning

confidence: 93%

“…Thus, a revision of Imparfinis is needed to get a better determination of existing or new species (Castro & Wosiacki, 2019). Considering the broad distribution of the genus, from Costa Rica to the Paraná and Uruguay rivers in Argentina, and on both sides of the Andes mountain range (Almirón et al ., 2007; Bockmann & Guazzelli, 2003; Castro & Wosiacki, 2019; Ortega‐Lara et al ., 2011) the discovery of new species is still likely, especially in unexplored areas within this distributional range.…”

Section: Introductionmentioning

confidence: 99%

“…Hitherto two species of Imparfinis have been confirmed for Argentina: I. hollandi and I. mishky Almirón et al ., 2007 (Mirande & Koerber, 2020). A third species was cited by Castello et al .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An integrative approach method reveals the presence of a previously unreported species of Imparfinis Eigenmann and Norris 1900 (Siluriformes: Heptapteridae) in Argentina

Aguilera

Terán

Mirande

et al. 2022

Journal of Fish Biology

View full text Add to dashboard Cite

Specimens of Imparfinis were recently collected in north-western Argentina from the Bermejo River basin (Salta and Jujuy Provinces), del Valle River (Salta Province) and Horcones River (Santiago del Estero Province). An integrative approach to taxonomy, combining a detailed morphological study and molecular phylogenetic analyses, was applied to determine the species identity of these specimens. A principal components analysis of morphological data clustered the specimens from north-western Argentina and from the Amazon basin, indicating a close morphological resemblance. Also, a molecular phylogenetic analysis showed populations of I. guttatus from Argentina and Peru forming a clade. According to the conducted haplotype network analysis these populations are distinct in two mutations. Thus, in the absence of morphological or molecular data indicating the contrary, the combined method supports the identity of the specimens from the tributaries of the Paraguay River in Argentina as I. guttatus, whose type locality is in the upper Beni River basin in Bolivia. This contribution is also the first record for this species from Argentina. The disjunct distribution of I. guttatus provides new evidence reinforcing the hypothesis for the origin of the Paraguayan ichthyofauna. We also provide an approach to the phylogenetic relationships of Imparfinis in Heptapteridae.

show abstract

Section: Methodsmentioning

confidence: 95%

“…Almirón et al . (2007), after examination of Castello's specimen, could not assign it to I. cochabambae , nor any other species.…”

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An integrative approach method reveals the presence of a previously unreported species of Imparfinis Eigenmann and Norris 1900 (Siluriformes: Heptapteridae) in Argentina

Aguilera

Terán

Mirande

et al. 2022

Journal of Fish Biology

View full text Add to dashboard Cite

show abstract

“…To date, the only attempt to phylogenetically diagnose Imparfinis is that of Bockmann (1998), as part of a comprehensive study of Heptapteridae. Currently the genus includes 19 species (Almirón et al, 2007;Bockmann & Guazelli, 2003;Ferraris, 2007), and is one of the most broadly distributed within the family Heptapteridae, from streams in Costa Rica [Imparfinis lineatus (Bussing, 1970)] to the Paraná and Uruguay river basins in Argentina (I. mishky Almirón, Casciotta, Bechara, Ruíz Díaz, Bruno, D'Ambrosio, Solimano & Soneira, 2007), and to both sides of the Andean cordillera. Most of the species have cis-Andean distributions while three are known to be trans-Andean: I. lineatus, I. nemacheir (Eigenmann & Fischer, 1916), originally described from the río Magdalena basin, in Colombia, and I. spurrellii (Regan, 1913), from the río San Juan basin, also in Colombia.…”

Section: Introductionmentioning

confidence: 99%

Two new trans-Andean species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae) from Colombia

et al. 2011

View full text Add to dashboard Cite

Two new species of Imparfinis are described from the trans-Andean region of Colombia. Imparfinis timana is diagnosed by having longer anal fin base , in combination with long adipose fin (24.6-31.3% in SL), 5-6 gill rakers on the first ceratobranchial, 42-43 vertebrae and additional measurements. Imparfinis usmai is distinguished by the combination of first ray of dorsal fin longest, but not projected as a long filament, long adipose fin (21.1-27.0% in SL), maxillary barbel exceeding pelvic-fin base, 39-40 vertebrae, upper caudal-fin lobe pointed and longer than lower lobe, lower lobe rounded, 7-8 gill rakers on the first ceratobranchial, as well as additional measurements. Imparfinis timana is only known from río Guarapas, a small tributary of the upper course of the río Magdalena. Imparfinis usmai is broadly distributed in the upper basin of ríos Cauca and Magdalena, and in the lower Patía river basin. The restricted distribution of I. nemacheir to transAndean drainages (Atrato, Magdalena, and Lago de Maracaibo) is also discussed.Duas novas espécies do gênero Imparfinis são descritas da região transandina da Colômbia. Imparfinis timana é diagnosticada por possuir as nadadeiras adiposa e anal compridas (24,6-31,3% e 12,4-15,5% no CP, respectivamente), 5-6 rastros branquiais no primeiro ceratobranquial, 42-43 vértebras, além de outros caracteres de morfometria. Imparfinis usmai é diferenciada pela combinação do primeiro raio da nadadeira dorsal longo, mas não projetado como um filamento comprido, nadadeira adiposa longa (21,1-27,0% na CP), barbilhões maxilares ultrapassando a base da nadadeira ventral, 39-40 vértebras, lóbulo superior da nadadeira caudal pontiagudo e mais longo que o lóbulo inferior, lóbulo inferior arredondado, 7-8 rastros branquiais no primeiro ceratobranquial e outros caracteres de morfometria. Imparfinis timana é conhecida somente para o rio Guarapas, pequeno tributário da bacia do alto rio Magdalena. Imparfinis usmai é amplamente distribuída nas bacias dos rios Cauca, Magdalena e Patía. A distribuição restrita de I. nemacheir nas bacias da região transandina (Atrato, Magdalena e Lago de Maracaibo) é discutida.

show abstract

A new cryptic species of Imparfinis (Siluriformes: Heptapteridae) from the Orinoco River basin, revealed by an iterative approach

Cortés‐Hernández,

López‐Castaño,

Milani

et al. 2023

Journal of Fish Biology

View full text Add to dashboard Cite

An iterative analysis of Imparfinis, combining phylogenetic analysis based on cytochrome oxidase gene and multivariate morphometrics, revealed a new cryptic species from the Andean tributaries of the Orinoco River basin, which is described here. The new species is sister to a clade constituted by Imparfinis hasemani and Imparfinis pijpersi, both from the river basins of the Guiana Shield, being also the most geographically proximate species. Nonetheless, the new species is most similar in general appearance to Imparfinis guttatus from the Madeira and Paraguay River drainages, being almost undistinguishable by conventional characters of external morphology, differing only by morphometric attributes overall. The new species can be distinguished from the remaining congeners by a unique combination of characters, including lower lobe of caudal fin darker than upper lobe, maxillary barbel reaching or surpassing pelvic‐fin insertion, 12–15 gill rakers on first gill arch, 40–42 total vertebrae and 9–10 ribs. The new species constitutes the only representative from the Orinoco River basin belonging to Imparfinis sensu stricto.

show abstract

Imparfinis mishky (Siluriformes, Heptapteridae) a new species from the ríos Paraná and Uruguay basins in Argentina

Cited by 4 publications

References 0 publications

An integrative approach method reveals the presence of a previously unreported species of Imparfinis Eigenmann and Norris 1900 (Siluriformes: Heptapteridae) in Argentina

An integrative approach method reveals the presence of a previously unreported species of Imparfinis Eigenmann and Norris 1900 (Siluriformes: Heptapteridae) in Argentina

Two new trans-Andean species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae) from Colombia

A new cryptic species of Imparfinis (Siluriformes: Heptapteridae) from the Orinoco River basin, revealed by an iterative approach

Contact Info

Product

Resources

About